<template>
 <Transition name="down">
   <div class='xtx-message' :style="style" v-if="visible">
      <!-- 上面绑定的是样式 -->
      <!-- 不同提示图标会变 -->
      <i class="iconfont" :class="[style[type].icon]"></i>
      <span class="text">{{text}}</span>
    </div>
</Transition>
  </template>
  <script>
  import { onMounted, ref } from 'vue'
  export default {
    name: 'XtxMessage',
    props: {
      text: {
        type: String,
        default: ''
      },
      type: {
        type: String,
        // warn 警告  error 错误  success 成功
        default: 'warn'
      }
    },
    setup () {
      // 定义一个对象，包含三种情况的样式，对象key就是类型字符串
      const style = {
        warn: {
          icon: 'icon-warning',
          color: '#E6A23C',
          backgroundColor: 'rgb(253, 246, 236)',
          borderColor: 'rgb(250, 236, 216)'
        },
        error: {
          icon: 'icon-shanchu',
          color: '#F56C6C',
          backgroundColor: 'rgb(254, 240, 240)',
          borderColor: 'rgb(253, 226, 226)'
        },
        success: {
          icon: 'icon-queren2',
          color: '#67C23A',
          backgroundColor: 'rgb(240, 249, 235)',
          borderColor: 'rgb(225, 243, 216)'
        }
      }
          // 定义一个数据控制显示隐藏，默认是隐藏，组件挂载完毕显示
    const visible = ref(false)
    onMounted(() => {
      visible.value = true
    })
    return { style, visible }
    }
  }
  </script>
  <style scoped lang="less">
  .xtx-message {
    width: 300px;
    height: 50px;
    position: fixed;
    z-index: 9999;
    left: 50%;
    margin-left: -150px;
    top: 25px;
    line-height: 50px;
    padding: 0 25px;
    border: 1px solid #e4e4e4;
    background: #f5f5f5;
    color: #999;
    border-radius: 4px;
    i {
      margin-right: 4px;
      vertical-align: middle;
    }
    .text {
      vertical-align: middle;
    }
  }
  .down {
  &-enter {
    &-from {
      transform: translate3d(0,-75px,0);
      opacity: 0;
    }
    &-active {
      transition: all 0.5s;
    }
    &-to {
      transform: none;
      opacity: 1;
    }
  }
}
  </style>